It’s possible. You can take a pregnancy test as soon as your period is late. Some pregnancy tests even work a few days before a missed period. Read the label on the pregnancy test box to see when the test may become effective.

In general, tests — including those that claim they can detect pregnancy before a missed period — become more accurate as you get closer to your missed period. If your expected period is still a few days away, it’s probably a good idea to save your money and wait on taking a pregnancy test.